From pykde  Mon Jan 05 23:26:08 2015
From: Andreas Pakulat <apaku () gmx ! de>
Date: Mon, 05 Jan 2015 23:26:08 +0000
To: pykde
Subject: Re: [PyQt] QWebEnginePage API for callbacks
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Hi David,

On Mon, Jan 5, 2015 at 11:06 PM, David Cortesi <davecortesi@gmail.com>
wrote:

> In Qt5.4, the new QWebEngine interface takes account of the fact that the
> underlying Chromium engine is asynchronous. Four of the methods of
> QWebEnginePage take an argument "FunctorOrLambda" as a callback to receive
> control when the result is ready (for example, [1]).
>
> Using PyQt, I assume we can pass a Python defined function or lambda in
> this position?
>
> I'm a bit at a loss what to do following a call to such a method. What is
> the best way to "idle" until the callback comes? n.b. I don't see any
> WebEngine specific guidance at the PyQt5 doc [2].
>

I'd say just as all other callbacks in Qt (i.e. signal/slots), return
control to the qt event loop.

Andreas

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<div dir=3D"ltr">Hi David,<div class=3D"gmail_extra"><br><div class=3D"gmai=
l_quote">On Mon, Jan 5, 2015 at 11:06 PM, David Cortesi <span dir=3D"ltr">&=
lt;<a href=3D"mailto:davecortesi@gmail.com" target=3D"_blank">davecortesi@g=
mail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=
=3D"ltr"><div><div>In Qt5.4, the new QWebEngine interface takes account of =
the fact that the underlying Chromium engine is asynchronous. Four of the m=
ethods of QWebEnginePage take an argument &quot;FunctorOrLambda&quot; as a =
callback to receive control when the result is ready (for example, [1]).<br=
><br></div>Using PyQt, I assume we can pass a Python defined function or la=
mbda in this position?<br><br></div>I&#39;m a bit at a loss what to do foll=
owing a call to such a method. What is the best way to &quot;idle&quot; unt=
il the callback comes? n.b. I don&#39;t see any WebEngine specific guidance=
 at the PyQt5 doc [2].</div></blockquote><div><br></div><div>I&#39;d say ju=
st as all other callbacks in Qt (i.e. signal/slots), return control to the =
qt event loop.</div><div><br></div><div>Andreas=C2=A0</div></div></div></di=
v>

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